Savage
DualHead
Dualhead for mobile savage chips (MX, IX, Supersavages) is supported Xorg cvs.
See this page for the current status.
3D
3D is supported in xorg cvs as well, however, it is still insecure so it is not built by default.
See this page for instructions on building from cvs.
Xorg/DRI Snapshots
Binary snapshots (DDX, DRI, DRM) are available here.